By using Leica DM2700M metallography microscope,the influence of cooling water temperature and casting roll-ing speed on the grain size of 8011 aluminum casting rolling strip was quantitatively analyzed,and the optimal cooling water temperature and casting rolling speed range were analyzed. With the decrease of cooling water temperature and the increase of rolling speed,the grain size showed a trend of sharp decrease at first and then slow down. When the cooling water tem-perature was controlled in the range of 27～29℃,the grain size refinement effect was prominent,the average grain size was kept in the range of 300～320 μm,and the rolling speed was controlled in the range of 750～800 mm/min. The average grain size is 310～320 μm,and the grain refinement effect is ideal.
关键词
铸轧8011铝合金/金相检测/冷却水温/铸轧速度/晶粒度尺寸
Key words
8011 aluminum/metallography microscope inspection/cooling water temperature/rolling speed/grain size
维普
万方数据